Dimension: Twin bed: 79.1” x 41.1” x 37.2”; mattress size: 75” x 38”; Maximum 300 lbs. Heavy duty strong frame structure with durable metal slat support for mattress longevity. Stylish Design: A black modern metal frame with a beautifully rustic accented wood headboard delivers contemporary styling suitable for any bedroom. Under-Bed Storage: Extra 8.6”under-bed clearance for practical storage offers more space for storing anything.